1 files changed, 27 insertions, 48 deletions
diff --git a/zen/file_traverser.h b/zen/file_traverser.h
index 174503b5..9cba9e58 100644
--- a/zen/file_traverser.h
+++ b/zen/file_traverser.h
@@ -4,64 +4,43 @@
 // * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved        *
 // **************************************************************************
 
-#ifndef FILETRAVERSER_H_INCLUDED
-#define FILETRAVERSER_H_INCLUDED
+#ifndef FOLDER_TRAVERSER_H_INCLUDED_3127463214871234
+#define FOLDER_TRAVERSER_H_INCLUDED_3127463214871234
 
 #include <cstdint>
+#include <functional>
 #include "zstring.h"
-#include "file_id_def.h"
-
-//advanced file traverser returning metadata and hierarchical information on files and directories
 
 namespace zen
 {
-struct TraverseCallback
+struct FileInfo
 {
-    virtual ~TraverseCallback() {}
-
-    struct SymlinkInfo
-    {
-        SymlinkInfo() : lastWriteTime() {}
-
-        std::int64_t lastWriteTime; //number of seconds since Jan. 1st 1970 UTC
-    };
-
-    struct FileInfo
-    {
-        FileInfo() : fileSize(), lastWriteTime(), symlinkInfo() {}
-
-        std::uint64_t fileSize;     //unit: bytes!
-        std::int64_t lastWriteTime; //number of seconds since Jan. 1st 1970 UTC
-        FileId id;           //optional: initial if not supported!
-        const SymlinkInfo* symlinkInfo; //only filled if file is a followed symlink
-    };
-
-    enum HandleLink
-    {
-        LINK_FOLLOW, //dereferences link, then calls "onDir()" or "onFile()"
-        LINK_SKIP
-    };
-
-    enum HandleError
-    {
-        ON_ERROR_RETRY,
-        ON_ERROR_IGNORE
-    };
+    const Zchar* shortName;
+    const Zstring& fullPath;
+    std::uint64_t fileSize;     //[bytes]
+    std::int64_t lastWriteTime; //number of seconds since Jan. 1st 1970 UTC
+};
 
-    virtual void              onFile   (const Zchar* shortName, const Zstring& filepath, const FileInfo&    details) = 0;
-    virtual HandleLink        onSymlink(const Zchar* shortName, const Zstring& linkpath, const SymlinkInfo& details) = 0;
-    virtual TraverseCallback* onDir    (const Zchar* shortName, const Zstring& dirpath) = 0;
-    //nullptr: ignore directory, non-nullptr: traverse into using the (new) callback => implement releaseDirTraverser() if necessary!
-    virtual void releaseDirTraverser(TraverseCallback* trav) {}
+struct DirInfo
+{
+    const Zchar* shortName;
+    const Zstring& fullPath;
+};
 
-    virtual HandleError reportDirError (const std::wstring& msg, size_t retryNumber) = 0; //failed directory traversal -> consider directory data at current level as incomplete!
-    virtual HandleError reportItemError(const std::wstring& msg, size_t retryNumber, const Zchar* shortName) = 0; //failed to get data for single file/dir/symlink only!
+struct SymlinkInfo
+{
+    const Zchar* shortName;
+    const Zstring& fullPath;
+    std::int64_t lastWriteTime; //number of seconds since Jan. 1st 1970 UTC
 };
 
-//custom traverser with detail information about files
-//- client needs to handle duplicate file reports! (FilePlusTraverser fallback, retrying to read directory contents, ...)
-//- directory may end with PATH_SEPARATOR
-void traverseFolder(const Zstring& dirpath, TraverseCallback& sink); //noexcept
+//- non-recursive
+//- directory path may end with PATH_SEPARATOR
+void traverseFolder(const Zstring& dirPath, //noexcept
+                    const std::function<void (const FileInfo&    fi)>& onFile,          //
+                    const std::function<void (const DirInfo&     di)>& onDir,           //optional
+                    const std::function<void (const SymlinkInfo& si)>& onLink,          //
+                    const std::function<void (const std::wstring& errorMsg)>& onError); //
 }
 
-#endif // FILETRAVERSER_H_INCLUDED
+#endif //FOLDER_TRAVERSER_H_INCLUDED_3127463214871234